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Installation Verification and Additional Settings
Customer Acceptance Utility
7-2 Preliminary IB0056101-00 G.02
S
Make sure that write combining is enabled. The x86 Page Attribute Table
(PAT) mechanism that allocates write-combining (WC) mappings for the PIO
buffers has been added and is now the default. If PAT is unavailable or PAT
initialization fails for some reason, the code will generate a message in the
log and fall back to the MTRR mechanism. See BWrite Combining for more
information.
Check the PCIe bus width. If slots have a smaller electrical width than
mechanical width, lower than expected performance may occur. Use this
command to check PCIe Bus width:
$ ipath_control -iv
This will also show link speed.
Customer Acceptance Utility
ipath_checkout is a bash script that verifies that the installation is correct and
that all the nodes of the network are functioning and mutually connected by the
InfiniPath fabric. It must be run on a front end node, and requires specification of a
nodefile. For example:
$ ipath_checkout [options] nodefile
The nodefile lists the hostnames of the nodes of the cluster, one hostname per
line. The format of
nodefile is as follows:
hostname1
hostname2
...
ipath_checkout
performs the following seven tests on the cluster:
1. Executes the
ping command to all nodes to verify that they all are reachable
from the front end.
2. Executes the
ssh command to each node to verify correct configuration of
ssh.
NOTE:
The hostnames in the nodefile are Ethernet hostnames, not IPv4 addresses.
NOTE:
To create a nodefile you can use the ibhosts program. It will generate a
list of available nodes that are already connected to the switch. The
ibhosts program is described in more detail in the QLogic HCA and
QLogic OFED Software Users Guide.